685518535342 has 16 divisors (see below), whose sum is σ = 1088780193072. Its totient is φ = 322592376960.

The previous prime is 685518535337. The next prime is 685518535349. The reversal of 685518535342 is 243535815586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685518535349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4168693 + ... + 4330015.

It is an arithmetic number, because the mean of its divisors is an integer number (68048762067).

Almost surely, 2^685518535342 is an apocalyptic number.

685518535342 is a deficient number, since it is larger than the sum of its proper divisors (403261657730).

685518535342 is a wasteful number, since it uses less digits than its factorization.

685518535342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286323.

The product of its digits is 17280000, while the sum is 55.

The spelling of 685518535342 in words is "six hundred eighty-five billion, five hundred eighteen million, five hundred thirty-five thousand, three hundred forty-two".